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Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 2 : single core cables.

NF F63-306-2-2003 铁路设施。有专门防火性能的铁道车辆电缆。薄壁。

PVC insulation jacket and control cables used for 450/750V AC voltage and under control, monitoring and protection of the loop line and so on, the wires used to control a crane used to control cables.

聚氯乙烯绝缘和护套控制电缆用於交流电压为450/750V 及以下控制、监控回路及保护线路等场合，该电线应用於控制一种吊机用控制电缆。

For third rail systems, the shore supply cables are usually fed from electrified rails suspended from the shed roof. The cables are hung from trolleys running along the rails so that the supply is available along the whole track.

对于三轨供电系统，供电电缆通常是由安装在屋顶的带电轨道上悬吊下来的，从轨道上悬吊下来的电缆可以沿轨道移动，为车辆各处提供用电。

Multi-element metallic cables used in analogue and digital communication and control - Part 3-1 : sectionnal specification for unscreened cables characterized up to 100 MHz - Horizontal and building b

NF C93-542-3-1-2001 模拟和数字通信和控制用多元件金属电缆。第3-1部分：特征值最高达100 MHz的非屏蔽电缆的分规范。

Starting with the traits of zero order impedance and the relationship between zero order current and zero order impedance,analyzes the main differences of electric traits of power cables and aerial lines and the disadvantages of applying power cables into the traditional grounded protection.

从正、负、零序阻抗特性以及零序阻抗与零序电流的关系入手，分析了架空线路与电力电缆电气特性的主要区别及传统接地保护应用于电力电缆线路所带来的弊端。

The group has developed production bases of communication optic cables, communication cables, biaxially oriented BOPP and BOPA film.

企业创建于1989年，现拥有通信光缆，通信电缆，双向拉伸BOPP，BOPA薄膜等工业产品生产基地。

Such as the epeiric sea surveying cables, the nil-magnetical cable for ocean magnetic surveying meter, the ocean instrument cables, the ocean camera cable, the tide gauge special cable, the ocean buoy cable, the undersea communication cable, as well as the light and electricity compound cable for ocean survey, etc.

如浅海探测电缆；海洋磁探仪用无磁电缆；海洋仪表电缆；海洋摄像机电缆；验潮仪专用电缆；海洋浮标电缆；海底通信电缆；海洋探测用光电复合缆等。

The concept of influence degree of natural vibration period by cables is shown,and the influence of cables to the property of natural vibration of extradosed cable-stayed bridge s is analyzed by taking Xiaoxihu extradosed cable-stayed bridge in Lanzhou City as an example.

以小西湖矮塔斜拉桥为例，通过引入拉索自振频率影响度的概念，分析了拉索的存在对矮塔斜拉桥自振特性的影响，探讨了矮塔斜拉桥的自振特性与相应连续梁桥的区别；在分析矮塔斜拉桥地震反应的基础上，通过引入振型贡献率的概念，分析了高阶振型对矮塔斜拉桥动力性能的影响；分析了矮塔斜拉桥的振型耦联效应。

The cable vault has enough room to link several cables,The installation condition of cables can be insected easily through the shielding window on the door.

电缆室有充裕的空间，可联接多根电缆。通过柜门观察窗，可清楚的观察到电缆室的安装情况。

The index of flame retardant property,material,product structure and relevant method of test of the antiflaming flexible cable is established according to the standard of GB/T18301-2001《the Third Part of Burning Test of cables in the Condition of flame:Method of Buring Test of Bunchy Wires and Cables》.The Cable will emanate the bad gas in buring to causethe the second calamity,so the smoke capacity of the cable in burning should be tested according to the standard of IECl034-2(1991)《the Second Part of Method of Smoke Concentration Test ofCable 1n Burning:Procedure and Requirement ofTest》The Liberation of Gas 1n burning is tested according to the standard of IEC754-2(1991)《the Second Part of Test of Liberatlon of Burning Materlal from Cable:Method to Measure the ACidity with the Measured PH and Conductlvltv》.

对阻燃型软电缆所要求的阻燃性能指标，是根据GB/T18301-2001《电缆在火焰条件下的燃烧试验第3部分：成束电线或电缆的燃烧试验方法》标准的规定而确定其电缆的材料要求、产品结构和相应的试验方法；对于耐火性试验，并考虑到电缆在火焰中会散发有害气体，造成&二次灾害&，所以还规定了对电缆燃烧时发烟量进行试验，按IECl034-2(1991)《电缆在特定条件下燃烧的烟浓度试验方法第二部分试验步骤和要求》以及燃烧时析出气体按IEC754-2(1991)《取白电缆的村料燃烧时析山气体的试验第二部分用测量PH值和导电率来测量气体酸度的方法》进行试验。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。